Designing dispersive boundary condition (DBC) for the FD-TD method using digital filtering theory

Author

Bi Zhiqiang ; Wu Keli ; Litva, J.

Author_Institution

Commun. Res. Lab., McMaster Univ., Hamilton, Ont., Canada

fYear

1992

fDate

18-25 June 1992

Firstpage

326

Abstract

A dispersive boundary condition (DBC) for the finite-difference time-domain method is presented. This DBC can absorb waves over a wide frequency band. This DBC is based on a new interpretation of the boundary condition. The relationship between the absorbing boundary condition and digital filters is discussed. On the basis of this new explanation for the DBC, the design of the DBC is investigated using digital filter theory. The relationship between the new DBC and other DBCs is investigated.<>

Keywords

boundary-value problems; digital filters; dispersion (wave); electromagnetic wave absorption; filtering and prediction theory; finite difference time-domain analysis; DBC; FD-TD method; FDTD; absorbing boundary condition; digital filtering theory; digital filters; dispersive boundary condition; finite-difference time-domain method; frequency band; Boundary conditions; Digital filters; Dispersion; Filtering theory; Frequency; Microstrip antennas; Microstrip components; Microstrip filters; Reflection; Waveguide components;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE

Conference_Location

Chicago, IL, USA

Print_ISBN

0-7803-0730-5

Type

conf

DOI

10.1109/APS.1992.221933

Filename

221933